Datasheet SP486ECP, SP487EET, SP486ECT, SP486EEP, SP486EET Datasheet (Sipex Corporation)

®

Enhanced Quad RS-485/RS-422 Line Drivers

■ RS-485 or RS-422 Applications

■ Quad Differential Line Drivers

■ Driver Output Disable

■ –7V to +12V Common Mode Output

Range

■ 100µA Supply Current

■ Single +5V Supply Operation

■ Superior Drop-in Replacement for

SN75172, SN75174, LTC486, and LTC487

■ Improved ESD Specifications: +15kV Human Body Model +15kV IEC1000-4-2 Air Discharge +8kV IEC1000-4-2 Contact Discharge

SP486E and SP487E

DESCRIPTION…

The SP486E and SP487E are low-power quad differential line drivers that meet the specifications of RS-485 and RS-422 serial protocols with enhanced ESD performance. The ESD tolerance has been improved on these devices to over +15kV for both Human Body Model and IEC1000-4-2 Air Discharge Method. These devices are superior drop-in replacements to Sipex's SP486 and SP487 devices as well as popular industry standards. As with the original versions, the SP486E features a common driver enable control and the SP487E provides independent driver enable controls for each pair of drivers. Both feature wide common-mode input ranges. Both are available in 16-pin plastic DIP and SOIC packages.

DO1A

DO1B

DO2B

DO2A

GND

DI

1

EN

1

2

3

4

5

6

SP486E

4

2

DI

7

2

8

3

V

16

CC

DI

15

4

DO4A

14

DO4B

13

EN

12

DO3B

11

DO1A

DO1B

EN1/EN

DO2B

DO2A

DI

1

2

1

2

3

4

5

6

SP487E

4

V

16

CC

DI

15

4

DO4A

14

DO4B

13

EN3/EN

12

11

4

DO3B

2

DO3A

10

DI

9

3

DI

GND

7

2

8

3

DO3A

10

DI

9

3

1

ABSOLUTE MAXIMUM RATINGS

These are stress ratings only and functional operation of the device at these or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability.

VCC.................................................................. +7V

Input Voltages

Logic....................................–0.5V to (VCC +0.5V)

Drivers ................................. –0.5V to (VCC +0.5V)

Driver Output Voltage ................................... +14V

Input Currents

Logic........................................................ +25mA

Driver....................................................... +25mA

Storage Temperature ................. –65°C to +150°C

Power Dissipation

Plastic DIP .............................................. 375mW

(derate 7mW/°C above +70°C)

Small Outline .......................................... 375mW

(derate 7mW/°C above +70°C)

Lead Temperature (soldering, 10 sec) ......... 300°C

SPECIFICATIONS

VCC = 5V±5%; typicals at 25°C; T

PARAMETER MIN. TYP. MAX. UNIT CONDITIONS DC CHARACTERISTICS

Digital Inputs DI, EN, EN, EN Voltage

V

IL

V

IH

Input Current +2 µAVIN = 0V to V

DRIVER OUTPUTS

Differential Voltage V

Change in Output Magnitude 0.2 Volts R for Complementary Output State Common Mode Output Voltage 2.3 3 Volts R Change in Common Mode Output Magnitude 0.2 Volts R for Complementary Output State RL = 50Ω (RS-422)

Maximum Data Rate 10 Mbps Short–circuit Current

V

OH

V

OL

High Impedance Output Current +2 +200 µAVO = –7V to +12V

POWER REQUIREMENTS

Supply Voltage 4.75 5.00 5.25 Volts Supply Current 0.5 10 mA No load, output enabled

ENVIRONMENTAL AND MECHANICAL

Operating Temperature

–C 0 +70 °C

–E –40 +85 °C Storage Temperature –65 +150 °C Package

–_P 16–pin Plastic DIP

–_T 16–pin SOIC

≤ TA ≤ T

MIN

unless otherwise noted.

MAX

0.8 Volts

2.0 Volts

2 Volts RL = 50Ω(RS-422)

1.5 2 V

CC

Volts IO = 0; unloaded Volts R

= 27Ω (RS-485);

L

= 27Ω or 50Ω ;

L

= 27Ω or 50Ω;

L

= 27Ω or 50Ω;

L

RL = 27Ω (RS-485)

+250 mA –7V ≤VO ≤ +12V

0.5 10 µA No load, output disabled

/EN2, EN3/EN

1

CC

Fig.

Fig. Fig.

Fig.

4

1

1 1

2

PINOUT — SP486E

16

V

CC

DI

15

4

3

4

DO4A

14

DO4B

13

EN

12

DO3B

11

DO3A

10

DI

9

3

DO1A

DO1B

DO2B

DO2A

GND

DI

1

EN

DI

2

1

2

3

4

5

6

2

7

8

SP486E

SP486E PINOUT

Pin 1 — DI1 — Driver 1 Input — If Driver 1 output is enabled, logic 0 on DI1 forces driver output DO1A low and DO1B high. A logic 1 on DI1 with Driver 1 output enabled forces driver DO1A high and DO1B low.

Pin 2 — DO1A — Driver 1 output A. Pin 3 — DO1B — Driver 1 output B. Pin 4 — EN — Driver Output Enable. Please

refer to SP486E Truth Table (1).

S

1

V

OUTPUT

UNDER TEST

C

L

500 ohms

S

CC

2

Figure 3. Driver Timing Test Load

Pin 8 — GND — Digital Ground. Pin 9 — DI3 — Driver 3 Input — If Driver 3

output is enabled, logic 0 on DI3 forces driver output DO3A low and DO3B high. A logic 1 on DI3 with Driver 3 output enabled forces driver DO3A high and DO3B low.

Pin 10 — DO3A — Driver 3 output A. Pin 11 — DO3B — Driver 3 output B. Pin 12 — EN — Driver Output Disable. Please

refer to SP486E Truth Table (1). Pin 13 — DO4B — Driver 4 output B.

Pin 5 — DO2B — Driver 2 output B. Pin 6 — DO2A — Driver 2 output A.

Pin 14 — DO4A — Driver 4 output A. Pin 15 — DI4 — Driver 4 Input — If Driver 4

output is enabled, logic 0 on DI4 forces driver

Pin 7 — DI2 — Driver 2 Input — If Driver 2 output is enabled, logic 0 on DI2 forces driver output DO2A low and DO2B high. A logic 1 on

output DO4A low and DO4B high. A logic 1 on DI4 with Driver 3 output enabled forces driver DO4A high and DO4B low.

DI2 with Driver 2 output enabled forces driver DO2A high and DO2B low.

Pin 16 — Supply Voltage VCC — 4.75V ≤ VCC ≤

5.25V.

A

R

V

DO

R

V

OC

DI

B

Figure 1. Driver DC Test Load

Figure 2. Driver Timing Test

EN

DRIVER

EN

C

L1

A

R

DIFF

B

C

L2

3

PINOUT — SP487E

DI

1

DO1A

DO1B

EN1/EN

DO2B

DO2A

GND

1

2

DI

2

1

2

3

4

5

6

2

7

8

SP487E

4

3

INPUT ENABLES OUTPUTS

DI EN EN OUTA OUTB

16

V

CC

DI

15

4

DO4A

14

DO4B

13

EN3/EN

12

11

10

4

DO3B

DO3A

DI

9

3

HHX H L LHX L H HXL H L LXL L H X L H Hi–Z Hi–Z

Table 1. SP486E Truth Table

Pin 11 — DO3B — Driver 3 output B.

SP487E PINOUT

Pin 1 — DI1 — Driver 1 Input — If Driver 1 output is enabled, logic 0 on DI1 forces driver output DO1A low and DO1B high. A logic 1 on DI1 with Driver 1 output enabled forces driver DO1A high and DO1B low.

Pin 2 — DO1A — Driver 1 output A. Pin 3 — DO1B — Driver 1 output B. Pin 4 — EN1/EN2 — Driver 1 and 2 Output

Enable. Please refer to SP487E Truth Table (2). Pin 5 — DO2B — Driver 2 output B. Pin 6 — DO2A — Driver 2 output A. Pin 7 — DI2 — Driver 2 Input — If Driver 2

output is enabled, logic 0 on DI2 forces driver output DO2A low and DO2B high. A logic 1 on DI2 with Driver 2 output enabled forces driver DO2A high and DO2B low.

Pin 8 — GND — Digital Ground. Pin 9 — DI3 — Driver 3 Input — If Driver 3

output is enabled, logic 0 on DI3 forces driver output DO3A low and DO3B high. A logic 1 on DI3 with Driver 3 output enabled forces driver DO3A high and DO3B low.

Pin 10 — DO3A — Driver 3 output A.

Pin 12 — EN3/EN4 — Driver 3 and 4 Output Enable. Please refer to SP487E Truth Table (2).

Pin 13 — DO4B — Driver 4 output B. Pin 14 — DO4A — Driver 4 output A. Pin 15 — DI4 — Driver 4 Input — If Driver 4

output is enabled, logic 0 on DI4 forces driver output DO4A low and DO4B high. A logic 1 on DI4 with Driver 3 output enabled forces driver DO4A high and DO4B low.

Pin 16 — Supply Voltage VCC — 4.75V ≤ VCC ≤

5.25V.

FEATURES…

The SP486E and SP487E are low–power quad differential line drivers meeting RS-485 and RS-422 standards. The SP486E features active high and active low common driver enable controls; the SP487E provides independent, active high driver enable controls for each pair of drivers. The driver outputs are short–circuit limited to 200mA. Data rates up to 10Mbps are supported. Both are available in 16–pin plastic DIP and SOIC packages.

INPUT ENABLES OUTPUTS

DI EN1/EN2 or EN3/EN4 OUTA OUTB

HHHL LHLH X L Hi–Z Hi–Z

Table 2. SP487E Truth Table

4

DI

3V 0V

t

PLH

F = 1MHZ: t

< 10ns: tf < 10ns

r

1.5V 1.5V t

PHL

B A

V

O

–V

O

Figure 4. Driver Propagation Delays

V

O

1

V

O

2

V

= V(A) – V(B)

DIFF

90%

10%

t

r

1

V

O

2

90%

10%

t

f

AC PARAMETERS

VCC = 5V±5%; typicals at 25°C; T

PARAMETER MIN. TYP. MAX. UNIT CONDITIONS PROPAGATION DELAY

Driver Input to Output R

Low to High (t

High to Low (t Differential Skew (t Driver Rise Time (tR) 10% to 90%

SP486E 20 ns

SP487E 20 ns Driver Fall Time (tF) 90% to 10%

SP486E 20 ns

SP487E 20 ns

DRIVER ENABLE

To Output High 60 110 ns CL = 100pF;

To Output Low 60 115 ns CL = 100pF;

DRIVER DISABLE

From Output Low 60 130 ns CL = 15pF; From Output High 60 130 ns CL = 15pF;

= 25°C unless otherwise noted.

AMB

) 204060 ns

PLH

) 204060 ns

PHL

) 5 15 ns t

SKEW

= 54 Ohms, CL1= CL2=

DIFF

100pF;

Figure 2

= t

SKEW

PLH

(S2 closed) (S1 closed)

(S1 closed) (S2 closed)

- t

PHL

Figures 3 and 5 Figures 3 and 5

5

EN

A, B

V

3V 0V

5V

CC

OL

F = 1MHZ: t

< 10ns: tf < 10ns

r

1.5V 1.5V

t

ZL

V

O

2.3V

t

LZ

0.5V

Output normally low

V

OH

0V

t

ZH

Figure 5. Driver Enable/Disable Timing

R

RR

C

CC

SW1

SW1SW1

DC Power

Source

Figure 6. ESD Test Circuit for Human Body Model

R

RR

C

CC

Output normally high

2.3V

R

RR

S

SS

C

CC

S

SS

Contact-Discharge Module

Contact-Discharge ModuleContact-Discharge Module

R

RR

S

R

RR

V

SS

VV

t

HZ

SW2

SW2SW2

0.5V

Device Under Test

SW1

SW1SW1

DC Power Source

Figure 7. ESD Test Circuit for IEC1000-4-2

C

CC

S

SS

RS and RV add up to 330Ω for IEC1000-4-2.

RR

andand RR

add up to 330add up to 330ΩΩ f for IEC1000-4-2.or IEC1000-4-2.

S S

V V

SW2

SW2SW2

Device Under Test

6

ESD TOLERANCE

The SP486E and SP487E devices incorporate ruggedized ESD cells on all driver output and receiver input pins. The ESD structure is improved over our previous family for more rugged applications and environments sensitive to electro-static discharges and associated transients. The improved ESD tolerance is at least +15kV without damage nor latch-up.

There are different methods of ESD testing applied:

a) MIL-STD-883, Method 3015.7 b) IEC1000-4-2 Air-Discharge

c) IEC1000-4-2 Direct Contact

The Human Body Model has been the generally accepted ESD testing method for semiconductors. This method is also specified in MIL-STD-883, Method 3015.7 for ESD testing. The premise of this ESD test is to simulate the human body’s potential to store electro-static energy and discharge it to an integrated circuit. The simulation is performed by using a test model as shown in Figure 6. This method will test the IC’s capability to withstand an ESD transient during normal handling such as in manufacturing areas where the ICs tend to be handled frequently.

The IEC-1000-4-2, formerly IEC801-2, is generally used for testing ESD on equipment and systems. For system manufacturers, they must guarantee a certain amount of ESD protection since the system itself is exposed to the outside environment and human presence. The premise with IEC1000-4-2 is that the system is required to withstand an amount of static electricity when ESD is applied to points and surfaces of the equipment that are accessible to personnel during normal usage. The transceiver IC receives most of the ESD current when the ESD source is applied to the connector pins. The test circuit for IEC1000-4-2 is shown on Figure 7. There are two methods within IEC1000-4-2, the Air Discharge method and the Contact Discharge method.

i ➙

30A

15A

0A

t=0ns t=30ns

t ➙

Figure 8. ESD Test Waveform for IEC1000-4-2

With the Air Discharge Method, an ESD voltage is applied to the equipment under test (EUT) through air. This simulates an electrically charged person ready to connect a cable onto the rear of the system only to find an unpleasant zap just before the person touches the back panel. The high energy potential on the person discharges through an arcing path to the rear panel of the system before he or she even touches the system. This energy, whether discharged directly or through air, is predominantly a function of the discharge current rather than the discharge voltage. Variables with an air discharge such as approach speed of the object carrying the ESD potential to the system and humidity will tend to change the discharge current. For example, the rise time of the discharge current varies with the approach speed.

The Contact Discharge Method applies the ESD current directly to the EUT. This method was devised to reduce the unpredictability of the ESD arc. The discharge current rise time is constant since the energy is directly transferred without the air-gap arc. In situations such as hand held systems, the ESD charge can be directly discharged to the equipment from a person already holding the equipment. The current is transferred on to the keypad or the serial port of the equipment directly and then travels through the PCB and finally to the IC.

7

The circuit model in Figures 6 and 7 represent the typical ESD testing circuit used for all three methods. The CS is initially charged with the DC power supply when the first switch (SW1) is on. Now that the capacitor is charged, the second switch (SW2) is on while SW1 switches off. The voltage stored in the capacitor is then applied

The higher CS value and lower RS value in the IEC1000-4-2 model are more stringent than the Human Body Model. The larger storage capacitor injects a higher voltage to the test point when SW2 is switched on. The lower current limiting resistor increases the current charge onto the test

point. through RS, the current limiting resistor, onto the device under test (DUT). In ESD tests, the SW2 switch is pulsed so that the device under test receives a duration of voltage.

For the Human Body Model, the current limiting resistor (RS) and the source capacitor (CS) are

1.5kW an 100pF, respectively. For IEC-1000-4-2, the current limiting resistor (RS) and the source capacitor (CS) are 330W an 150pF, respectively.

DEVICE PIN HUMAN BODY IEC1000-4-2 TESTED MODEL Air Discharge Direct Contact Level

Driver Outputs +15kV +15kV +8kV 4 Receiver Inputs

Table 3. Transceiver ESD Tolerance Levels

+15kV +15kV +8kV 4

8

D1 = 0.005" min.

(0.127 min.)

D

e = 0.100 BSC

(2.540 BSC)

B1

B

ALTERNATE

END PINS

(BOTH ENDS)

PACKAGE: PLASTIC

DUAL–IN–LINE (NARROW)

E1

E

A1 = 0.015" min.

(0.381min.)

A = 0.210" max.

(5.334 max).

A2

L

C

Ø

eA = 0.300 BSC

(7.620 BSC)

DIMENSIONS (Inches)

Minimum/Maximum

(mm) A2

B

B1

C

D

E

E1

L

Ø

16–PIN

0.115/0.195

(2.921/4.953)

0.014/0.022

(0.356/0.559)

0.045/0.070

(1.143/1.778)

0.008/0.014

(0.203/0.356)

0.780/0.800

(19.812/20.320)

0.300/0.325

(7.620/8.255)

0.240/0.280

(6.096/7.112)

0.115/0.150

(2.921/3.810)

0°/ 15°

(0°/15°)

9

PACKAGE: PLASTIC

SMALL OUTLINE (SOIC) (WIDE)

EH

D

A

Ø

Be

A1

DIMENSIONS (Inches)

Minimum/Maximum

(mm) A

A1

B

D

E

e

H

L

Ø

16–PIN

0.093/0.104

(2.352/2.649)

0.004/0.012

(0.102/0.300)

0.013/0.020

(0.330/0.508)

0.398/0.413

(10.10/10.49)

0.291/0.299

(7.402/7.600)

0.050 BSC

(1.270 BSC)

0.394/0.419

(10.00/10.64)

0.016/0.050

(0.406/1.270)

0°/8°

(0°/8°)

L

10

ORDERING INFORMATION

Quad RS485 Drivers:

Model .................................. Enable/Disable ........................ Temperature Range ......................... Package

SP486ECP ....... Common; active Low and Active High ............ 0°C to +70°C ..................16–pin Plastic DIP

SP486ECT........ Common; active Low and Active High............ 0°C to +70°C...........................16–pin SOIC

SP486EEP........ Common; active Low and Active High.......... –40°C to +85°C................16–pin Plastic DIP

SP486EET........ Common; active Low and Active High ..........–40°C to +85°C.........................16–pin SOIC

SP487ECP ............ One per driver pair; active High ................. 0°C to +70°C..................16–pin Plastic DIP

SP487ECT............. One per driver pair; active High ................. 0°C to +70°C...........................16–pin SOIC

SP487EEP............. One per driver pair; active High ............... –40°C to +85°C................16–pin Plastic DIP

SP487EET............. One per driver pair; active High ...............–40°C to +85°C.........................16–pin SOIC

Please consult the factory for pricing and availability on a Tape-On-Reel option.

Corporation

SIGNAL PROCESSING EXCELLENCE

Sipex Corporation Headquarters and

Sales Office

22 Linnell Circle Billerica, MA 01821 TEL: (978) 667-8700 FAX: (978) 670-9001 e-mail: sales@sipex.com

Sales Office

233 South Hillview Drive Milpitas, CA 95035 TEL: (408) 934-7500 FAX: (408) 935-7600

Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or circuit described hereing; neither does it convey any license under its patent rights nor the rights of others.

11

Datasheet SP486ECP, SP487EET, SP486ECT, SP486EEP, SP486EET Datasheet (Sipex Corporation)

Specifications and Main Features

Frequently Asked Questions

User Manual